The BFKL Pomeron in 2+1 Dimensional QCD

Details The BFKL Pomeron in 2+1 Dimensional QCD The BFKL Pomeron in 2+1 Dimensional QCD

1998-04-29

arxiv.org/abs/hep-ph/9804443v1

Phys.Rev. D58 (1998) 074010

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages LATEX, 3 EPS figures included

Scientific paper

10.1103/PhysRevD.58.074010

We investigate the high-energy scattering in the spontaneously broken Yang - Mills gauge theory in 2+1 space--time dimensions and present the exact solution of the leading $\ln s$ BFKL equation. The solution is constructed in terms of special functions using the earlier results of two of us (L.N.L. and L.S.). The analytic properties of the $t$-channel partial wave as functions of the angular momentum and momentum transfer have been studied. We find in the angular momentum plane: (i) a Regge pole whose trajectory has an intercept larger than 1 and (ii) a fixed cut with the rightmost singularity located at $j=1$. The massive Yang - Mills theory can be considered as a theoretical model for the (non-perturbative) Pomeron. We study the main structure and property of the solution including the Pomeron trajectory at momentum transfer different from zero. The relation to the results of M. Li and C-I. Tan for the massless case is discussed.

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